"This is called a mini-project. How ironic."
To wrap up our last unit on similarity, I gave students the task of taking a real-life object and shrinking or enlarging it by a scale factor of their own choosing. They took this opportunity to literally blow up the objects in gigantic proportions. Throughout the few days we worked on the project in class, the class laughed about how ironic it was that this was called a "mini-project" when there was nothing mini about it at all. I love math humor. I was thoroughly impressed how students attended to precision during this task. They worked so diligently and carefully to measure each part of their object. They calculated how to enlarge the figure by their chosen scale factor, and worked carefully to draw the image of their figure accurately. As they worked, they solidified an understanding of what changes and what stays the same when a figure is enlarged or reduced. Here are some questions you might pose to reinforce their work in this unit:
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